?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Gros&rft.aufirst=S%C3%A9bastien&rft.au=Gros%2C+S%C3%A9bastien&rft.isbn=978-3-033-03962-9&rft.date=July+2013&rft.title=A+relaxation+strategy+for+the+optimization+of+Airborne+Wind+Energy+systems&rft.btitle=European+Control+Conference+(ECC)%2C+2013&rft.genre=proceeding